| abstract |
To provide an ink jet ink that is excellent in image scratch resistance, marker resistance and ink ejection stability, and can suppress image distortion due to face wetting. A polyurethane resin having units derived from a polyisocyanate, a polyol, and a diol having an acid group, and an inkjet ink containing a pigment, wherein the polyurethane resin has an acid value of 20 mgKOH / g or more 100 mg KOH / g or less, The polyisocyanate contains 90 mol% or less of units derived from a compound containing an allophanate bond and a polyethylene glycol group. [Selection figure] None |